Watts 0276890 Valve
The Watts 0276890 (Series 174A) is a high-capacity ASME Section IV water pressure relief valve engineered for commercial and industrial hot water heating boilers. With a 1-1/2 inch NPT female inlet and outlet, this valve provides a high-volume steam discharge capacity of 5,290,000 BTU/hr at its 100 PSI pressure setting. The 174A features a rugged bronze body and a stainless steel spring designed to withstand demanding hydronic environments without sticking or freezing.
Designed strictly for emergency overpressure protection, this Watts 174A relief valve utilizes a non-mechanical seat-to-disc alignment and a non-metallic disc-to-metal seating surface to ensure a tight seal. The "above-drain" seat design prevents sediment from fouling the valve, a critical factor for long-term reliability in boiler systems. This model includes a manual test lever for routine maintenance checks and is suitable for systems with operating temperatures up to 250°F. For modern facility management, it integrates with SentryPlus Alert flood sensors to monitor discharge events via a building management system.
Key Benefits
- High BTU Rating: Delivers 5,290,000 BTU/hr capacity, protecting large-scale commercial boiler equipment.
- Corrosion Resistance: Features a bronze body construction and stainless steel spring for longevity in harsh water conditions.
- Anti-Foul Design: Raised seat architecture prevents sediment buildup and avoids seat freezing or sticking.
- Monitoring Ready: Compatible with SentryPlus Alert technology for remote flood detection and discharge notification.
- ASME Certified: Built to meet ASME Section IV standards for pressure safety in hot water supply systems.
Common Questions
What is the difference between an operating control and this relief valve?
The Series 174A is an emergency safety device only. It should never be used as an operating control to regulate system pressure under normal conditions.
Can this valve be used for steam heating boilers?
No, this specific model is designed for hot water heating boilers and domestic hot water supply systems. Always verify the BTU rating matches or exceeds the boiler output.
How should the discharge line be installed?
The discharge line must be the same size as the 1-1/2 inch valve outlet and must be pitched downward to a safe point of disposal to prevent water traps.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $894.57
-65%$894.57
$313.10Watts 0276890 Valve
The Watts 0276890 (Series 174A) is a high-capacity ASME Section IV water pressure relief valve engineered for commercial and industrial hot water heating boilers. With a 1-1/2 inch NPT female inlet and outlet, this valve provides a high-volume steam discharge capacity of 5,290,000 BTU/hr at its 100 PSI pressure setting. The 174A features a rugged bronze body and a stainless steel spring designed to withstand demanding hydronic environments without sticking or freezing.
Designed strictly for emergency overpressure protection, this Watts 174A relief valve utilizes a non-mechanical seat-to-disc alignment and a non-metallic disc-to-metal seating surface to ensure a tight seal. The "above-drain" seat design prevents sediment from fouling the valve, a critical factor for long-term reliability in boiler systems. This model includes a manual test lever for routine maintenance checks and is suitable for systems with operating temperatures up to 250°F. For modern facility management, it integrates with SentryPlus Alert flood sensors to monitor discharge events via a building management system.
Key Benefits
- High BTU Rating: Delivers 5,290,000 BTU/hr capacity, protecting large-scale commercial boiler equipment.
- Corrosion Resistance: Features a bronze body construction and stainless steel spring for longevity in harsh water conditions.
- Anti-Foul Design: Raised seat architecture prevents sediment buildup and avoids seat freezing or sticking.
- Monitoring Ready: Compatible with SentryPlus Alert technology for remote flood detection and discharge notification.
- ASME Certified: Built to meet ASME Section IV standards for pressure safety in hot water supply systems.
Common Questions
What is the difference between an operating control and this relief valve?
The Series 174A is an emergency safety device only. It should never be used as an operating control to regulate system pressure under normal conditions.
Can this valve be used for steam heating boilers?
No, this specific model is designed for hot water heating boilers and domestic hot water supply systems. Always verify the BTU rating matches or exceeds the boiler output.
How should the discharge line be installed?
The discharge line must be the same size as the 1-1/2 inch valve outlet and must be pitched downward to a safe point of disposal to prevent water traps.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Watts 0276890 (Series 174A) is a high-capacity ASME Section IV water pressure relief valve engineered for commercial and industrial hot water heating boilers. With a 1-1/2 inch NPT female inlet and outlet, this valve provides a high-volume steam discharge capacity of 5,290,000 BTU/hr at its 100 PSI pressure setting. The 174A features a rugged bronze body and a stainless steel spring designed to withstand demanding hydronic environments without sticking or freezing.
Designed strictly for emergency overpressure protection, this Watts 174A relief valve utilizes a non-mechanical seat-to-disc alignment and a non-metallic disc-to-metal seating surface to ensure a tight seal. The "above-drain" seat design prevents sediment from fouling the valve, a critical factor for long-term reliability in boiler systems. This model includes a manual test lever for routine maintenance checks and is suitable for systems with operating temperatures up to 250°F. For modern facility management, it integrates with SentryPlus Alert flood sensors to monitor discharge events via a building management system.
Key Benefits
- High BTU Rating: Delivers 5,290,000 BTU/hr capacity, protecting large-scale commercial boiler equipment.
- Corrosion Resistance: Features a bronze body construction and stainless steel spring for longevity in harsh water conditions.
- Anti-Foul Design: Raised seat architecture prevents sediment buildup and avoids seat freezing or sticking.
- Monitoring Ready: Compatible with SentryPlus Alert technology for remote flood detection and discharge notification.
- ASME Certified: Built to meet ASME Section IV standards for pressure safety in hot water supply systems.
Common Questions
What is the difference between an operating control and this relief valve?
The Series 174A is an emergency safety device only. It should never be used as an operating control to regulate system pressure under normal conditions.
Can this valve be used for steam heating boilers?
No, this specific model is designed for hot water heating boilers and domestic hot water supply systems. Always verify the BTU rating matches or exceeds the boiler output.
How should the discharge line be installed?
The discharge line must be the same size as the 1-1/2 inch valve outlet and must be pitched downward to a safe point of disposal to prevent water traps.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
